Preheat the oven to 400°F and grease a 13x9-inch baking dish with nonstick spray.
Cook the egg noodles in boiling water for 1 minute less than what the package recommends.
You want them to be al dente, as they will finish cooking in the oven.
Drain the noodles and pour out the water.
Put the olive oil in the same pot and heat it up.
Add the ground beef and cook for 5 minutes, breaking it up with a wooden spoon.
Pour off the grease.
Next, add the onion, salt, pepper, Italian seasoning, and garlic powder to the pan.
Cook for 4 minutes or until the beef is cooked through and the onions are tender.
Stir in the canned tomatoes and tomato sauce.
Stir in the drained egg noodles.
Add 2 cups of the cheese and stir again.
Now pour the mixture into the greased baking dish.
Sprinkle the remaining cheese on top.
Bake for 10 minutes or until the cheese has melted on top.